Minnesotans are starting 2015 with the cheapest gas prices we’ve seen in five years. According to AAA, the average price for a gallon of gas in the Twin Cities is $2.03. That’s 14-cents cheaper than a week ago, and far cheaper than the $3.24 we were paying last January.

The cost to fill up at gas stations keeps going down. In the Twin Cities on Tuesday night, a gallon of regular was just $2.14 on average. But for drivers using diesel it’s considerably more: $3.30 a gallon.

For years, the state’s corn and ethanol industries have touted the environmental benefits of burning the alternative fuel in our vehicles. But newly released research from the University of Minnesota College of Science and Engineering is raising eyebrows.

If you’re getting ready to gas up for a trip up north this weekend, be prepared to pay a little more at the pump. Gas prices have risen on average by about 15 cents per gallon in the Twin Cities during the past week.

Minnesota Gov. Mark Dayton and six other governors are writing to President Obama asking for help in addressing the propone shortage and price increases. They are asking for the administration to help increase propane supplies through “every means of transport.”

The extreme cold isn’t just uncomfortable. It’s becoming expensive, too, especially for homeowners in rural Minnesota who rely on propane to heat their homes. Prices jumped last fall, and with several subzero nights this winter, the cost of propane continues to climb.

While cars had trouble starting Monday, dozens of planes didn’t get off the ground at all. Some airlines had to cancel flights after jet fuel actually froze at airports across the Midwest. There were 50 flights cancelled and more than two dozen delays at MSP Monday. But almost none of them had to do with the local weather, according to airport spokesman Patrick Hogan.

Several states in the upper Midwest are dealing with significantly higher prices for propane because of a supply problem caused by a late harvest, persistent very cold temperatures and the temporary shutdown of a major supply pipeline.

A Canadian fuel supplier and reseller plans to enter the U.S. market with a $110 million purchase of a North Dakota fuel distribution business. Parkland Fuel Corporation, which is based in Red Deer, Alberta, said it is buying all outstanding shares of SPF Energy Inc.

The worst may be over for drivers in the upper Midwest who have been grappling with the highest gasoline prices in the continental U.S. Analysts said one major Illinois refinery is back online and another big one in Indiana is on track to ramp up production again soon.

Minnesota’s No. 1 in the nation, in a category few are rejoicing over. The Twin Cities’ average price for gas is the most expensive in the nation at $4.32 per gallon, according to GasBuddy.com. Chicago is second ($4.28), Honolulu is third ($4.25) and Santa Barbara is fourth ($4.17).

As gas prices in Minnesota reached record high prices of about $4 per gallon, Sen. Amy Klobuchar called on the Department of Energy to take action. The gas price spike came after the closure of oil refineries in the Midwest for maintenance.

Remember analyst predictions that we could be paying $5 per gallon of gasoline this summer? Thankfully, that scenario hasn’t come to pass. Gas prices have been falling over the past few weeks. But why?

Delta Air Lines reported a first-quarter profit on Wednesday as gains from hedging its fuel costs made up for losses in its day-to-day operations. The first three months of the year are usually the weakest for airlines because fewer people fly.